Gearing.



G. D. SEVERANUEI GEARING.

' AP-PLIOATIOEI FILED JUNE 5, 191g,

Pmwa Nov. 26, 1912.

Fig. 2

GEARINE Specification of Letters Patent.

ii 'n'tcntcri Nov, 26 EH2.

Application filed June 5, 1812. Serial No. 701,939.

cs' ccialiy to tools provided with spindles h ed to be driven at (41H!rent speeds.

bne of the objects of the invention isto t ic change of speed may bereadily accent-- zed 7 .her objects to provide a device of thischaracter which is simple in its constrnction, and therefore not liableto get out order; which is c'ificient in use, and which will hecomparatively inexpensive to n'ianni'acture, i

1. l 1 objects will in part be obvious, and in partno pointed outhereinafter. Y A

in the accompanying drawing showing an iiiustra tire embodiment of thisinvention and which the some reference numeral rcii'ers to similar partsin the several figures, Figure 1 is a view in side elevation showing theinvention as applied to a breast drill. is a sectional view on a largerscale taken on the line 2--2 of Fig. l. 3 a part sectional view taken onthe line 3--3 of Fig. 5.

lit the illustrative embodiment-shovvn in the drawings, the invention isshown as lociug applied to a breast drill, but it will, of course, beunderstood that it couldbc ap plied to other-tools or machines Withoutinany Way departing from the spirit of the invention. v

in the drawings, 1 represents a "frame in which is rotatehly mountedspindle 2 provided it; its outer end with a chuck 3, of the use a1character, adapted to hold the drill bit, and secured to the inner end"of the spindle 2 are two bevel gears i and 5. A breast plate 6 supportedby the frame in the usual manner, and the frame is also provided withthe usual handle 7. The frame is provided with two sockets 8 and 9 whichare parallel with one another and Whichare at rightangles to the axisot'the spindle 2. These sockets adapted to receive the axle 10 or a dri ingWheel 11' which is provided. with handle 18 by means of which the Wheelis rotated. The parts are so adjusted that when tfle axle i ispositioned in the socket 8 the outer gear teeth 152 Will engage with thegear on the spindle 2, and the inner gear teeth 13 will be out ofengagement with,

either of the gears l and on the spindle. lironi this it will be seenthat us the handle ii is r ated, 2i rapid .l'lllTJQllitlll'i] will begiven to the chuck 3. By piecing the axle in the other socket 9, theinner teeth 13 on the Wheel 11 will engage the gear Wheel 4 on thespindle 2 and the outer gear teeth will be out of engagement with eitherof the and hour which it will be seen that, when the parts are sopositioned, ro-- tation oi the Wheel ll. will cause a slow movement ofthe chuck 3.

In order to icinovahly hold the axle 10 in POL-31151011 Within either meof the sockets i 8 or i), the clinic is provided witlr'an annular roovewith Wt) i let-hing member i6 adapted to e'xteinl ihroi a slot formedsition as by means of a spring 18, one end oi which engages theiiigenpicce l? and the other end of which engages the frame 1.

The operation of the device, which should be apparent from the drawings,is as follows: Assuming the Wheel ill. tobe positioned as shown in, l 1,in which position the chuc l'iigh speed, it it desired to drive thechuck at its low speed, it merely necessary to depress the finger-piece17, which will, of course, causeihe locking member 16 to move out ofengagement with the annular groove in the axle 10, indicated in dottedlines in Big 2. Thv trie may then be withdrawn from the socket S andinserted in socket 9, after which, upon relieving the pressure on thelinger-piece 17, the spring 18 Will cause the locking member 16 toassume its normal or looking position, thereby retaining the axle inplace.

Having descrihez'i this invention in connection with the illustrativeembodiment thereof, to the details of which disclosure the invention isnot, of course, to be limited, What is claimed as new and what isdesired to be secured by Letters Patent is set forth in the appendedclaims:

3 is adapted to be driven at its Y l. in a tool, in combination, a framepro lul 'vided with two sockets, a spindle rotatably mounted in theframe and two gear wheels mounted thereon, a driving wheel. providedwith eencentriea ily arranged gear teeth adapted to enga 'e with saidgear wheels, said drivingwheel being provided with an axle adapted toengage either one of Said sockets, said axle being provided with anannular groove, and a locking member extending within said socketsintermediate the ends thereof and adapted to engage said annular grooveto loot: the axle in position.

2. In a tool, in combination, a. frame provided with two soolzets, aspindle rotatably mounted in the frame and two gear wheels mountedtl'iereon, a thriving wheel provided with concentrically arranged gearteeth adapted to engage with said gear wheels, said driving wheel beingprovided with. an axle adapted to engage either one of said sockets,said axle being provided with an annular groom, said frame beingprovided with a slot comnnnricating with sockets intermediate their endsand a locking member reeiprocatingly po itioned within said slot andadapted to nimal within said sockets and en, ige the annular groove in.to hold 1 in position.

3. In a tool, in. il'flllll' lll'zllitlll, a ill-nine proxided with twosin-hens, a swindle rotatably mounted in the frame and two gear mountedthermal, a driving wheel n-ovided with content al y arranged gear teethadapted to or go with said gear wheels, said drivim;- .0l being providedwith an a.-.le adal to engage either one of said wickets-u axle. beingprovided with an annular l-Yt, said frame being provided with a (aeonnnunicating With sockets intermediate their ends, a locking memberwheels sail slot reciprocatingly positioned within t sockets and adaptedto extend Within so. and engage the annular groove in to hold it inposition, a finger-piece secured to said locking member for actuatingthe latter, and a spring engaging said fingerpieee and normally holdingsaid locking member in its operative position.

4:. In a tool, in combination, a frame provided with two sockets, aspindle rotatably mounted in the frame and two gear Wheels mountedthereon, a driving wheel provided with concentrically arrangz-rd gearteeth adapted to engage with sa'l gear Wheels, said driving wheel beingprovided with an axle adapted to engage either one of said sockets, saidaxle being provided with an annular groove, said frame being providedwith a slot connnunicating with said sockets intermediate their ends, alocking member r iciprocatingly positioned within said slot and adaptedto extend Within said sockets and engage in the annular groove in saidaxle tohold it in position, said frame being provided witlran openingextending between said sockets and communicating with said slot, afinger piece positioned Within said opening and communicating with saidlocking member to actuate the same, and a spring operativelyconneeted'to said finger piece and normally holding said locklng memberin its operative position.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES D. SEVERANCE.

\Vitnesses trains Sronnann, Jnssm S. BLACKMER.

said a file

